CN102493598A - Magnesium oxysulfate cement board and method for preparing same by using semidry method - Google Patents
Magnesium oxysulfate cement board and method for preparing same by using semidry method Download PDFInfo
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- CN102493598A CN102493598A CN2011104309006A CN201110430900A CN102493598A CN 102493598 A CN102493598 A CN 102493598A CN 2011104309006 A CN2011104309006 A CN 2011104309006A CN 201110430900 A CN201110430900 A CN 201110430900A CN 102493598 A CN102493598 A CN 102493598A
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Abstract
The invention relates to a magnesium oxysulfate cement board and a method for preparing the same by using a semidry method. The magnesium oxysulfate cement board comprises a heat insulation core layer and strength structure layers respectively compounded on the two surfaces of the heat insulation core layer. The heat insulation core layer is a layer structure formed by stirring and pressing magnesium oxysulfate which is used as a gelatinizing agent and a light material which is used as a filler. Each strength structure layer is a layer structure formed by the magnesium oxysulfate which is used as the gelatinizing agent. The magnesium oxysulfate cement board disclosed by the invention has the outstanding substantive characteristics that a plate material with a multilayer composite structure is formed by mixing the magnesium oxysulfate utilized as the gelatinizing agent with the light material and/or a reinforcing fiber; the structure of the core layer has the characteristics of light weight and good heat preservation and heat insulation effects; the strength structure layers on the two surfaces of the core layer have the characteristics of bending resistance and high compression strength; and meanwhile, the magnesium oxysulfate cement board is low in PH value and has no chlorine content. Therefore, the occurrence of the moisture absorption and the halogenation are avoided; the corrosion on materials, such as plant fibers, metal pieces and the like, is avoided; and the application range is widened and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of magnesium oxysulfide concrete plate and semidry method preparation method thereof.
Background technology
The sheet material of producing with inorganic coagulation material is a lot.As, that adopts portland cement production has TK plate, FC plate, an Etta's nit plate; That adopts gypsum production has Thistle board, gypsum plaster ceiling board, a gypsum wallboard; That adopts magnesia oxychloride cement production has glass fibre and magnesium cement board, a light cellular partition board.
Analyze from making sheet material aspect:
Portland cement board exists the shortcoming that density is big, pH value is high, and glass fiber is had heavy corrosion, contacts with string to produce xylitol, influences cementitious intensity.Therefore, adopt the vinylon short fiber as reinforcing material, still, also there is shortcoming in vinylon: refractoriness is good inadequately, finally also influences the overall performance of portland cement board.
Gypsum plank, intensity difference is afraid of humidity, has influenced accommodation.
The magnesia oxychloride cement plate, intensity is high, pH value is low, can adopt glass fiber enhancing, string to fill, and still, owing to contain free chloro ion in the magnesia oxychloride cement plate, has the damp suction surface halide accumulation phenomenon, makes the metalwork corrosion when cooperating with metalwork easily.
Analyze from the plate construction aspect:
Sheet material with inorganic materials all is homogeneous texture in the market, and the plate surface is consistent with intermediate structure, can only obtain intensity through increasing thickness, causes the weight of plate bigger than normal, and carrying is brought difficulty, increases building weight simultaneously.
Summary of the invention
The objective of the invention is to solve the problems referred to above that prior art exists and a kind of magnesium oxysulfide concrete plate and semidry method preparation method thereof are provided; Selecting magnesium oxysulfide concrete for use is gelling agent; Be aided with light material or be aided with light material and fortifying fibre simultaneously; And adopt the semidry method preparation, obtain the magnesium oxysulfide concrete plate of stratiform sandwich structure, weight reduction and improved the effect of thermal insulation when possessing sufficient intensity.
The present invention solves the technical scheme that the prior art problem adopted: a kind of magnesium oxysulfide concrete plate, it is characterized in that comprising heat insulation sandwich layer, and be compound in the strength structure layer on said heat insulation sandwich layer two surfaces respectively; Described heat insulation sandwich layer be with the magnesium oxysulfide concrete is gelling agent, with the lightweight material be filler, through stirring, suppress formed layer structure; Described strength structure layer is to be the formed layer structure of gelling agent with the magnesium oxysulfide concrete.The employing magnesium oxysulfide concrete is gelling agent, mixes with light material or fortifying fibre, forms the sheet material of multi-layer compound structure, has intensity height, lightweight characteristics; Increased heat insulation and preservation effect simultaneously; In addition, pH value is low, no chlorine concentration; Avoid the appearance of damp suction surface halide accumulation phenomenon, improve range of application and application life.
As to further the improving and replenishing of technique scheme, the present invention adopts following technical measures: described strength structure layer is to be the intensity supplementary material with the fortifying fibre and to mix stirrings, warp stirring with gelling agent, suppresses formed layer structure.Fiber reinforced material is used to improve the bend resistance intensity of sheet material.
Described fiber reinforced material is string or glass fiber.Because the pH value of magnesium oxysulfide concrete is low, can select string for use, when reducing cost, has enough intensity again, achieves many things at one stroke.
Described lightweight material is expanded perlite, vermiculite, float pearl, kieselguhr.The setting of light material is mainly used in and reduces whole weight, improves heat insulating effect simultaneously, can also reduce cost.
Go back the composite reinforcing fiber layer between described strength structure layer and the heat insulation sandwich layer.
Described fortifying fibre layer is glass fiber or string or metallic fiber, also can use chemical fiber.Fortifying fibre is the bend resistance intensity that is used to strengthen sheet material.
Described fortifying fibre layer corresponding to the every side of heat insulation sandwich layer is at least two-layer respectively.Can use the demand of ring mirror to sheet material bend resistance intensity in one's power according to applied field, consider the number of plies of fortifying fibre layer, the many more intensity of the number of plies are high more.
The main material compositions in weight percentage of described magnesium oxysulfide concrete is: 100 parts in magnesia, magnesium sulfate 30-70 part, water 30-70 part, accelerator 1-80 part.
Semidry method prepares the method for magnesium oxysulfide concrete plate, it is characterized in that,
Soon but magnesium oxysulfide concrete prescription composition or magnesium oxysulfide concrete prescription composition mix the half-dried strength structure layer material that forms decentralized with the intensity supplementary material; With magnesium oxysulfide concrete and accelerator and lightweight material stirring, but the half-dried heat-insulating core layer material of formation decentralized;
In step 2, the fortifying fibre layer of also mating formation respectively between two surfaces of heat insulation sandwich layer and two intensity decks promptly, is mated formation the half-dried material of strength structure layer to supporting plate through spreading machine; The fortifying fibre layer is mated formation to the strength structure layer of having completed, the more half-dried material of heat insulation sandwich layer is mated formation to the fortifying fibre layer of having completed; Then, at the heat insulation sandwich layer upper berth dress fortifying fibre layer that paves, last again, on the fortifying fibre layer that paves, repave the half-dried material of adorning the strength structure layer, form the stratiform sandwich structure.
The outstanding substantive distinguishing features that the present invention has: the employing magnesium oxysulfide concrete is gelling agent, mixes with light material and/or fortifying fibre; Form the sheet material of multi-layer compound structure; That core structure possesses is in light weight, the characteristics of good effect of heat insulation, and the strength structure layers on sandwich layer two surfaces have bend resistance, characteristics that compressive resistance is high, simultaneously; This magnesium oxysulfide concrete plate pH value is low; No chlorine concentration, avoid the damp suction surface halide accumulation phenomenon appearance, avoid corrosion to materials such as string, metalworks, improve range of application and application life.
Description of drawings
Fig. 1 is a kind of cross-sectional structure sketch map of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further described.
Embodiment:A kind of magnesium oxysulfide concrete plate, as shown in Figure 1, it comprises heat insulation sandwich layer 2, is compound in the strength structure layer 1 on heat insulation sandwich layer two surfaces respectively.Heat insulation sandwich layer be with the magnesium oxysulfide concrete is gelling agent, with the lightweight material be filler, through stirring, suppress formed layer structure.The strength structure layer is to be that the formed layer structure of gelling agent, warp stir, suppress formed layer structure with the magnesium oxysulfide concrete.
For the bend resistance intensity of the deck of gaining in strength, another preferred version of strength structure layer is: the strength structure layer is is gelling agent with the magnesium oxysulfide concrete, be the intensity supplementary material with the fortifying fibre, through stirring, suppress formed layer structure.Wherein, the preferred version of intensity supplementary material: be string or glass fiber.
Be expanded perlite, vermiculite, float pearl, kieselguhr at a distance from the lightweight material of sandwich layer.
In order to increase the bend resistance intensity of this magnesium oxysulfide concrete plate, further preferred scheme is: go back composite reinforcing fiber layer 3 between strength structure layer and the heat insulation sandwich layer.Can use the demand of ring mirror to sheet material bend resistance intensity in one's power according to applied field, consider the number of plies of fortifying fibre layer, the many more intensity of the number of plies are high more.
The preferred version of fortifying fibre layer is glass layer or plant fiber layer or metallic fibrous layer.Certainly the fibrous material of also not getting rid of other.
Wherein, the compositions in weight percentage of magnesium oxysulfide concrete is: 100 parts in magnesia, magnesium sulfate 30-70 part, water 30-70 part, accelerator 1-80 part.For magnesia per 100 parts, magnesium sulfate, water
,Any numerical value of accelerator in weight percentages of components interval separately all can be realized.As: the compositions in weight percentage of oxygen magnesium cement is: 100 parts in magnesia, 40 parts in magnesium sulfate, 35 parts in water, 60 parts of accelerator; Perhaps, 100 parts in magnesia, 50 parts in magnesium sulfate, 45 parts in water, 65 parts of accelerator.
Semidry method prepares the method for magnesium oxysulfide concrete plate, it is characterized in that,
Be about to magnesium oxysulfide concrete and intensity supplementary material and stir, but the half-dried strength structure layer material of formation decentralized; With magnesium oxysulfide concrete and lightweight material stirring, but the half-dried heat-insulating core layer material of formation decentralized;
Further preferred scheme, in step 2, the fortifying fibre layer of between two surfaces of heat insulation sandwich layer and two intensity decks, also mating formation respectively promptly, is mated formation the half-dried material of strength structure layer to supporting plate through spreading machine; The fortifying fibre layer is mated formation to the strength structure layer of having completed, the more half-dried material of heat insulation sandwich layer is mated formation to the fortifying fibre layer of having completed; Then, at the heat insulation sandwich layer upper berth dress fortifying fibre layer that paves, last again, on the fortifying fibre layer that paves, repave the half-dried material of adorning the strength structure layer, form the stratiform sandwich structure.
Claims (10)
1. a magnesium oxysulfide concrete plate is characterized in that comprising heat insulation sandwich layer, is compound in the strength structure layer on said heat insulation sandwich layer two surfaces respectively; Described heat insulation sandwich layer is is gelling agent with the magnesium oxysulfide concrete, be filler with the lightweight material, through stirring, suppress formed layer structure; Described strength structure layer is to be that gelling agent is formed with the magnesium oxysulfide concrete, through stirring, suppress formed layer structure.
2. a kind of magnesium oxysulfide concrete plate according to claim 1 is characterized in that described strength structure layer is to be the intensity supplementary material with the fortifying fibre and to mix stirring with gelling agent, suppress formed layer structure.
3. a kind of magnesium oxysulfide concrete plate according to claim 2 is characterized in that described fortifying fibre is string or glass fiber.
4. according to claim 1 or 3 described a kind of magnesium oxysulfide concrete plates, it is characterized in that described lightweight material is expanded perlite, vermiculite, floats pearl, kieselguhr.
5. according to claim 1 or 2 or 3 described a kind of magnesium oxysulfide concrete plates, it is characterized in that going back the composite reinforcing fiber layer between described strength structure layer and the heat insulation sandwich layer.
6. a kind of magnesium oxysulfide concrete plate according to claim 5 is characterized in that described fortifying fibre layer is glass layer or plant fiber layer or metallic fibrous layer or chemical fiber layer.
7. a kind of magnesium oxysulfide concrete plate according to claim 5 is characterized in that being at least one deck respectively corresponding to the described fortifying fibre layer of the every side of heat insulation sandwich layer.
8. a kind of magnesium oxysulfide concrete plate according to claim 1 is characterized in that the compositions in weight percentage of described magnesium oxysulfide concrete is: 100 parts in magnesia, magnesium sulfate 30-70 part, water 30-70 part, accelerator 1-80 part.
9. semidry method prepares the method for each described magnesium oxysulfide concrete plate among the claim 1-8, it is characterized in that,
Step 1 forms the half-dried material of strength structure layer and the half-dried material of heat insulation sandwich layer:
Soon but magnesium oxysulfide concrete prescription composition or magnesium oxysulfide concrete prescription composition mix the half-dried strength structure layer material that forms decentralized with the intensity supplementary material; The magnesium oxysulfide concrete prescription is formed and the lightweight material stirring, but the half-dried heat-insulating core layer material of formation decentralized;
Step 2 is mated formation the half-dried material of strength structure layer to supporting plate through spreading machine; The half-dried material of heat insulation sandwich layer is mated formation to the strength structure layer of having completed; At the half-dried material of the heat insulation sandwich layer upper berth dress strength structure layer that paves, form the stratiform sandwich structure again;
Step 3 with the pressurization of stratiform sandwich structure, solidify to form the magnesium oxysulfide concrete plate under the pressurize condition.
10. the method for preparing said magnesium oxysulfide concrete plate according to claim 9; It is characterized in that in step 2; The fortifying fibre layer of also mating formation respectively between two surfaces of heat insulation sandwich layer and two intensity decks promptly, is mated formation the half-dried material of strength structure layer to supporting plate through spreading machine; The fortifying fibre layer is mated formation to the strength structure layer of having completed, the more half-dried material of heat insulation sandwich layer is mated formation to the fortifying fibre layer of having completed; Then, at the heat insulation sandwich layer upper berth dress fortifying fibre layer that paves, last again, on the fortifying fibre layer that paves, repave the half-dried material of adorning the strength structure layer, form the stratiform sandwich structure.
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Application publication date: 20120613 |